MiSTer FPGA Forum

One more round of arcade core updates: Gyruss: -Add LUTs to simulate the non-linear analog video output from the PCB's weighted resistor DACs -Slight tweak to 60Hz-normalized timings -Update framework Jailbreak: -Add LUTs to simulate the non-linear analog video output from the PCB's weighted resistor DACs -Tidy up sprite logic for the 005849 implem...

Arkanoid:
-Add LUT to simulate the non-linear analog video output from the PCB's weighted resistor DACs
-Reduce overclock for 60Hz-adjusted timings to attain 59.94Hz VSync instead of 60Hz
-Update framework

Finalizer - Super Transformation, Iron Horse, Jackal: -Add LUTs to simulate the non-linear analog output from the PCBs' weighted resistor DACs -Revise 005885 tilemap logic based on decap of the more advanced 007121 by Furrtek -Rework 005885 video timers -Fix long-standing issue causing sprites to render one frame earlier than normal (hardware uses...

Finalizer - Super Transformation: -Revise Konami 005885 IRQ, layer priority and sprite logic -Reverse E/Q clocks for the KONAMI-1 CPU -Add option to change core clocks to normalize video timings and achieve 60Hz VSync -Reorganize menu options to reduce clutter -Add shadow mask support ( NOTE: This feature is currently experimental ) -Update framew...

Large arcade core update: Arkanoid, Gyruss, Iron Horse, Jackal, Jailbreak, Scooter Shooter, Time Pilot, Time Pilot '84: Common changes -Add option to change core clocks to normalize video timings and achieve 60Hz Vsync -Reorganize menu options to reduce clutter -Add shadow mask support ( NOTE: This feature is currently experimental ) -Update framew...

Finalizer - Super Transformation:
New arcade core

Time Pilot: Complete core redesign for improved accuracy: -New model built using Time Pilot '84 as a base -Increase base clock to match actual frequencies of the PCB; fixes slower-than-normal game speed from the original implementation -Refactor all clocks derived from the base clock -Add implementation of the Konami 501 custom chip from Gyruss fo...

Time Pilot '84, Gyruss:
-Fix longer-than-normal VSync pulse length on 082 custom chip
-Further tweaking of the 502 and 503 custom chip implementations
-Minor adjustment to vertical counter latching (this fixes a hidden sprite rendering bug in the previous build of Time Pilot '84 which was only exposed with the revised 502 and 503 implementations)

lamarax wrote: ↑Wed Sep 29, 2021 7:21 pm I felt the urge to express my gratitude to those low-key developers, who have been constantly providing us with great (and significant) cores with little to no recognition.

Thank you so much guys from the bottom of my heart! Your work is truly appreciated!

The sentiment is much appreciated, Lamarax, and there's still more to come from me.

Jailbreak, Scooter Shooter: -Use a single common Konami 005489 implementation across both games -Correct tilemap/sprite priority behavior; fixes layer priorities in Jailbreak during the self-test -Implement proper ZRAM row scroll/column scroll handling -Add horizontal mask register; this is set by Jailbreak after the self-test to mask the left-mos...

Scooter Shooter
New arcade core

Believe it or not, yes. The aspect ratio is very narrow on this hardware, mostly as a result of the 6.144MHz pixel clock, which looks even narrower with games using the 005885 custom chip as the active area is not 256x224 like Gyruss, but rather 240x224. This is exactly how both Iron Horse and Jackal look like on a consumer-grade CRT and MiSTer loo...

Iron Horse, Jackal:
Two new arcade cores.

Thank you, although I must ask: where does Gyruss need work? I know the AY-3-8910 volume scale needs to be checked again, but where else is the core acting weird? If you can get specifics, I'll have a look. EDIT: Forgot to mention - the updated core will NOT work with MrX-8B's original MRAs. You must use the updated MRAs (though I've been told the ...

Gyruss
First official release
Improves the overall accuracy and audio quality of MrX-8B's original design using a new model built using Time Pilot '84 as a base

Time Pilot '84: -Change CPU model from CPU09 to Greg Miller's cycle-accurate MC6809E - corrects CPU timings and produces more accurate sprite limit behavior -Fix sprite flickering with certain ground targets introduced in the 03/30/2021 core rewrite -Update Konami 082, 502 and 503 custom chip implementations -Tweaks to IRQ and tilemap layer logic ...

Time Pilot '84:
-Core rewritten from scratch for better stability
-Screen centering added
-Minor tweaks to audio gain
-Correct mistakes in the switchable low-pass filters
-Fix two reversed DIP switches and updated MRAs accordingly
-Update framework

Arkanoid:
-Widen original aspect ratio
-Force VGA scaler option removed
-Add volume boost option for louder audio output

Time Pilot '84:
-New arcade core (first official release after a lengthy public beta-testing period)

The core will be updated in the next few days to make 200:171 the default aspect ratio so you don't have to set a custom ratio anymore.

Arkanoid:
-Add support for custom aspect ratios
-Add toggle to force scaler output over VGA
-Update framework

Sets 1 and 2 use 4 ROMs on the primary CPU while Set 3 consolidates this down into two ROMs and may do the same with the sprite ROMs. There was one Time Pilot '84 board I had seen on eBay that I presume is Set 3 as it looks quite a bit different to the board I was loaned for the MiSTer core, which runs on Set 2. Some of the board layout has been re...

I don't need any of the Konami custom chips or SN76489 (Arnim Laeuger's implementation is present in the Colecovision core but has off-by-1 errors in the tone generator and an incorrect LFSR which I've fixed for Time Pilot '84, and I brute-forced the Konami custom chips using those from an actual Time Pilot '84 PCB), but thanks for offering. All I ...

I'm setting up to put the core on the official repo in the next 4 days. There have been problems with the watchdog timer triggering non-stop with the July 13 build of the core, so I made a new one earlier in the month that I haven't released yet which gives the option to toggle the watchdog on or off (the Time Pilot '84 PCB does this by means of a ...

That is the normal refresh rate of the PCB (actually 60.55-60.58Hz depending on component tolerances). Konami PCBs of this era exceed 60Hz, sometimes even going over 61Hz as is the case with Jackal, which operates at around 61.08Hz. BTW: if you change the set 2 MRA rom section to say 'zip="tp84a.zip|tp84.zip" it will work with all the var...

Arkanoid:
-Convert from VHDL to SystemVerilog
-Fix audio aliasing issues
-Add audio low-pass filter
-Lower core volume
-Partial fix for Easy difficulty
-Move DIP switches from core to MRAs
-Fix missing brick on Round 28
-New MRAs for regional variants
-Fix blanking region to show full visible area
-Update framework

This core makes the low-lag mode of the scaler really mad on my display. My TVs don't like it either, likely something about how the game's sync is generated. I've had other Konami boards act up on some TVs as well, so that might have something to do with it. Sometimes it works a few minutes but it begins to reset eventually and sometimes only res...

Thanks to the developers. I have no problem with the set 1 but no luck with set 2 besides a buzzing sound. Was it you who I was talking to on Twitter who had issues with the initial release and Set 2 just booting with a constant buzz? It should be working properly with the watchdog update from two days ago. Make sure you're using merged ROMs as we...